Add 25/42 and 56/45
1st number: 25/42, 2nd number: 1 11/45
25/42 + 56/45 is 1159/630.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
25/42 = 25 × 15/42 × 15 = 375/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
56/45 = 56 × 14/45 × 14 = 784/630 - Add the two like fractions:
375/630 + 784/630 = 375 + 784/630 = 1159/630 - So, 25/42 + 56/45 = 1159/630
In mixed form: 1529/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42+56/45 25/84+56/45 25/42+56/90 75/42+56/45